Investigation of geometrically and physically nonlinear problems of solid mechanics by nonlinear photoelasticity method

Geometrically and physically nonlinear problems of fracture mechanics at the large strains were investigated by nonlinear photoelasticity method. Stress and strain fields occurring under tensioning of rubber plates and strips with internal crack were obtained. The problems of plastic deformation in metals were solved by the photoelastic coating method. The examples of study of a dural strip with central crack-cut and the neck of a plane steel sample were considered. Some features of the stress and strain distribution in the geometrically and physically nonlinear problems were revealed.